Re: [Discuss-gnuradio] GRC:Suitable Sink required
Hi, It appears that gr.message_sink and gr.msg_queues are for digital data. but my flowgraph (periodogram) is for analog samples, complex baseband samples from usrp -- stream to vector (vectors of fft_size) -- FFT -- complex to mag squared -- (sink or block to be determined) Is their no choice other than file sink? Thanks --- On Mon, 4/20/09, Josh Blum j...@joshknows.com wrote: From: Josh Blum j...@joshknows.com Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: Saleem Akhtar saleemakhta...@yahoo.com Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 4:37 AM You can use a file sink to write the samples out to a file, and write some program to process the file. Or, you need to create your own block in c++ or python. If c++, the how to write a block example is a good reference. If python, the wxgui sinks are a good reference (see gr.message_sink and gr.msg_queues to get data out of the stream and into python). -Josh -Inline Attachment Follows- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GRC:Suitable Sink required
Hi, I am trying to implement a periodogram in gnu radio. http://img25.imageshack.us/img25/1606/powerdetectorgrc.png Currently, I am stuck in deciding what sink i should use and how. I want the output in the the form of an array so that I can have calculations on the periodogram samples. As the input are the realtime complex baseband samples from the USRP (here shown with a signal source), thus the sink should be flexible enough to be updated. Thus I think that a fixed length float vector sink doesnt suits here. I dont know how to proceed from here :-) Regards, Ali ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GRC:Suitable Sink required
Thanks, but i dont want to use GUI sink. I want to get an array of samples which represent the periodogram. So that i can do further processing on them. Regards From: Josh Blum j...@joshknows.com Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: Saleem Akhtar saleemakhta...@yahoo.com Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 3:55 AM You should probably start by looking at the existing wx gui sinks, copy and modify one: http://gnuradio.org/trac/browser/gnuradio/trunk/gr-wxgui/src/python The vector sink is not what you want here. -Josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GRC:Suitable Sink required
Thanks! I will look into it. --- On Mon, 4/20/09, Josh Blum j...@joshknows.com wrote: From: Josh Blum j...@joshknows.com Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: Saleem Akhtar saleemakhta...@yahoo.com Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 4:37 AM You can use a file sink to write the samples out to a file, and write some program to process the file. Or, you need to create your own block in c++ or python. If c++, the how to write a block example is a good reference. If python, the wxgui sinks are a good reference (see gr.message_sink and gr.msg_queues to get data out of the stream and into python). -Josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
